18022933944 has 32 divisors (see below), whose sum is σ = 50063706000. Its totient is φ = 6007644576.

The previous prime is 18022933937. The next prime is 18022933997. The reversal of 18022933944 is 44933922081.

It is a super-2 number, since 2×18022933944² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18022933944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41719539 + ... + 41719970.

Almost surely, 2^18022933944 is an apocalyptic number.

It is an amenable number.

18022933944 is an abundant number, since it is smaller than the sum of its proper divisors (32040772056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18022933944 is a wasteful number, since it uses less digits than its factorization.

18022933944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83439524 (or 83439514 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 18022933944 in words is "eighteen billion, twenty-two million, nine hundred thirty-three thousand, nine hundred forty-four".